Originally Posted by ReinaDeLaSelva

Senor APD is exempted for itineraries that use LHR as an international-to-international connecting point and LM never tickets with a stopover of duration that will trigger APD. Like the itins shown in OP screenshot.

https://www.gov.uk/guidance/exemptio...passenger-duty

LH does charge more redemption tax in general than other Star carriers it is true.

Buut LM's fees and taxes computation is strange to say the least and in some cases it seems very high...but also there are cases when it appears lower than e.g. UA MP offers (si, if you can duplicate the LM itin). If you use LM enough, you will lose some and then win some.